JP6331273B2 - connector - Google Patents

Description

  The present invention relates to a connector in which a terminal is locked in a terminal accommodating chamber.

Conventionally, as a connector having a terminal-equipped electric wire in which a terminal is provided at the terminal portion of the electric wire and a connector housing in which a terminal accommodating chamber in which the terminal is accommodated is formed and the terminal is locked in the terminal accommodating chamber The connector housing includes an elastic locking piece protruding in a cantilever manner on the inner wall surface of the terminal receiving chamber so that the locking surface is directed in the insertion direction of the terminal into the terminal receiving chamber.
Such a connector is inserted into the terminal accommodating chamber while the terminal is bent and deformed so that the elastic locking piece approaches the inner wall surface, and the locked surface of the terminal in which the elastic locking piece is directed in the direction opposite to the insertion direction. On the other hand, the terminal is locked in the terminal accommodating chamber by being elastically restored so as to secure the engagement margin with the locking surface.

  For example, Patent Document 1 discloses that a terminal is connected to a terminal by an engagement margin between a locked surface formed on a locking protrusion provided on the terminal and a locking surface formed on a lance (elastic locking piece) of a connector housing. It is locked in the storage chamber.

JP 2004-39279 A

  However, in the connector described in Patent Document 1, due to the rattling of the terminal in the terminal accommodating chamber, the engagement margin between the locking surface and the locked surface is reduced, and the terminal may be detached from the terminal accommodating chamber. was there.

  This invention is made | formed in view of the above, Comprising: It aims at providing the connector which can latch a terminal reliably in a terminal storage chamber.

In order to solve the above-described problems and achieve the object, a connector according to claim 1 of the present invention includes an electric wire with a terminal in which a terminal is provided at a terminal portion of the electric wire, and a terminal accommodating chamber in which the terminal is accommodated. A connector housing including an elastic locking piece formed in a cantilever manner on the inner wall surface of the terminal receiving chamber with the locking surface at the tip thereof facing the insertion direction of the terminal into the terminal receiving chamber. The terminal is inserted into the terminal accommodating chamber while being bent and deformed so that the elastic locking piece approaches the inner wall surface, and the elastic locking piece is directed in a direction opposite to the insertion direction of the terminal. In the connector in which the terminal is locked in the terminal accommodating chamber by being elastically restored so as to secure the engagement margin between the locked surface of the terminal and the locking surface, the terminal is connected to the locked surface. The surface is formed as part of the inner edge surface of the opening, and On the opposing inner wall surface of the terminal accommodating chamber facing the inner wall surface, the locking opening that can be arranged in a state where the elastic locking piece is elastically restored from the deformed state to the neutral state where the elastic locking piece is not deformed. Projecting so that at least a part of the region facing the locking opening is applied from a portion of the wall facing the wall where the locking opening is formed so as to be elastically contacted, and And an elastic protrusion that presses the terminal against the inner wall surface around the elastic locking piece so as not to leave a gap between the inner wall surface around the elastic locking piece.

In the connector according to claim 2 of the present invention, in the above invention, the terminal is formed by molding a plate-like metal member, and the elastic protruding portion cuts a part of the wall forming the terminal. It is formed by this.

  In the connector according to claim 1 of the present invention, the terminal is pressed against the inner wall surface by the elastic protruding portion, whereby the terminal is brought into contact with the opposing inner wall surface via the elastic protruding portion. Since it is arranged so as not to open a gap with the wall surface, rattling of the terminal in the terminal accommodating chamber is prevented, so that the engagement margin between the locked surface and the locking surface is reliably ensured. As a result, the terminal can be reliably locked in the terminal accommodating chamber.

  In the connector according to claim 2 of the present invention, since the elastic protrusion is formed by cutting and raising a part of the wall forming the terminal, the elastic protrusion can be provided with a simple configuration. Therefore, it is not necessary to change the size of the connector housing.

FIG. 1 is a perspective view of a connector according to an embodiment of the present invention, illustrating a state before a terminal of a terminal-attached electric wire is attached to a connector housing. FIG. 2 is a cross-sectional view of the connector housing of the connector shown in FIG. 1 and a side view of the terminal-attached electric wire. FIG. 3 is a cross-sectional view of the connector. 4A is an enlarged view of the vicinity of the locking surface and the locked surface shown in FIG. 3, and FIG. 4B is an enlarged view of the periphery of the elastic protrusion shown in FIG. FIG. 5 is a diagram showing the operation of each part of the connector from when the terminal starts to be inserted into the terminal accommodating chamber until it is locked in the terminal accommodating chamber. FIG. 6 is a cross-sectional view of a modified connector.

  Hereinafter, preferred embodiments of the connector 1 according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of a connector 1 according to an embodiment of the present invention, and shows a state before a terminal 20 of a terminal-attached electric wire 10 is attached to a connector housing 50. FIG. 2 is a cross-sectional view of the connector housing 50 of the connector 1 shown in FIG. 1, and is a view of the terminal-attached electric wire 10 as viewed from the side. FIG. 3 is a cross-sectional view of the connector 1. 4A is an enlarged view of the periphery of the locking surface 71 and the locked surface 27 shown in FIG. 3, and FIG. 4B is an enlarged view of the periphery of the elastic protrusion 40 shown in FIG.
In the figure, an arrow D indicates the insertion direction of the terminal 20.

  The connector 1 according to the embodiment of the present invention includes two terminal-attached electric wires 10 in which terminals 20 are provided at the terminal portions of the electric wires W, and two terminal accommodating chambers 60 in which the respective terminals 20 are accommodated. A connector housing 50 including an elastic locking piece 70 projecting in a cantilever manner on the inner wall surface 60a of the terminal receiving chamber 60 with the locking surface 71 at the tip facing the insertion direction of the terminal 20 into the receiving chamber 60; Have. The connector 1 is inserted into the terminal accommodating chamber 60 while the terminal 20 is bent and deformed so that the elastic locking piece 70 approaches the inner wall surface 60a, and the elastic locking piece 70 is directed in the direction opposite to the insertion direction. The terminal 20 is locked in the terminal accommodating chamber 60 by being elastically restored so as to secure the engagement with the locking surface 71 with respect to the locked surface 27 of the terminal.

First, the electric wire 10 with a terminal is demonstrated.
The terminal 20 is a metal fitting in which a plate-like member made of a metal such as copper or a copper alloy is formed by die pressing or the like. The terminal 20 includes a mating terminal connecting portion 22 that is a connecting portion with a connecting mating terminal (not shown), an electric wire connecting portion 30 that is connected to a terminal portion of the electric wire W, an mating terminal connecting portion 22 and an electric wire connecting portion 30. And an intermediate portion 33 for connecting the two.

  The mating terminal connection portion 22 is configured such that a mating terminal (not shown) is brought into contact with an elastic contact piece 24 (see FIG. 3) provided in a cylinder of the connection main body portion 23 having a rectangular tube shape.

The connection main body 23 includes a locking opening 25, a pair of locking piece guides 26 and 26, and an elastic protrusion 40.
The locking opening 25 is formed so that a neutral elastic locking piece 70 which is not bent and deformed can be arranged on one wall 22a of the wall forming the four rectangular tube-shaped surfaces of the connection main body 23. Open part.
Of the opening inner edge surface of the locking opening 25, the surface directed in the direction opposite to the insertion direction of the terminal 20 (hereinafter referred to as the terminal insertion direction D) functions as the locked surface 27. ing. That is, when the elastic locking piece 70 is disposed in the locking opening 25 in a neutral state where it is not elastically deformed, the locking surface 71 faces the locked surface 27.

  The pair of locking piece guide portions 26 and 26 are portions projecting in a plate shape at both end edges of the locking opening portion 25 extending along the terminal insertion direction D, and the elastic locking piece 70 is disposed therebetween. Thus, the elastic locking piece 70 is guided into the locking opening 25.

The elastic protruding portion 40 is a portion protruding so as to be elastically contacted with the opposing inner wall surface 60b of the terminal accommodating chamber 60 facing the inner wall surface 60a of the terminal accommodating chamber 60 from which the elastic locking piece 70 is projected. .
This elastic protrusion 40 is formed by cutting and raising a part of the wall forming the terminal 20. More specifically, the elastic protrusion 40 is a part of the wall 22b that faces the wall 22a in which the locking opening 25 is formed, among the four walls that form the rectangular tube shape of the connection main body 23. It is formed by cutting up diagonally.

  The elastic protrusion 40 is elastically formed on the opposing inner wall surface 60b until the terminal 20 is inserted into the terminal storage chamber 60 until the elastic protrusion 40 is locked in the terminal storage chamber 60. The dimensions, inclination angle, etc. are adjusted so as to keep in contact.

As shown in FIG. 2, the wire connecting portion 30 has a cylindrical shape in which both side ends of the plate-like portion are combined, and a conductor crimping portion 31 that is crimped to the exposed conductor portion 11 of the wire W; And an insulation coating crimping part 32 to be crimped to the insulation coating part 12.
The conductor crimping portion 31 is a portion that is provided on the front end side of the wire connecting portion 30 in the extending direction of the electric wire W and is crimped to the exposed conductor portion 11 of the terminal portion of the electric wire W.
The insulation coating crimp portion 32 is a portion that is provided on the rear end side of the wire connection portion 30 in the extending direction of the electric wire W and is crimped to the insulation coating portion 12.

Next, the connector housing 50 will be described.
The connector housing 50 has a block shape made of an insulating resin material, and two terminal accommodating chambers 60 are provided side by side.
The terminal accommodating chamber 60 is formed by a space penetrating from the terminal insertion port 62 into which the terminal 20 is inserted to the connection partner insertion port 63 into which the connection portion of the connection counterpart terminal is inserted.
The terminal accommodating chamber 60 is formed with a flexible space 61 in which the elastic locking piece 70 is bent and deformed so as to secure a moving space in the terminal insertion direction D of the terminal 20.
For this reason, when the terminal 20 is inserted from the terminal insertion port 62 and brought into contact with the elastic locking piece 70, the elastic locking piece 70 is bent and deformed so as to approach the inner wall surface 60a of the flexible space 61. The terminal 20 can move while being in sliding contact with the elastic locking piece 70.

Next, the operation of each part of the connector 1 from when the terminal 20 starts to be inserted into the terminal accommodating chamber 60 until it is locked in the terminal accommodating chamber 60 will be described with reference to FIG. FIG. 5 is a diagram illustrating the operation of each part of the connector 1 from when the terminal 20 is started to be inserted into the terminal accommodating chamber 60 until it is locked in the terminal accommodating chamber 60.
First, insertion of the terminal 20 is started from the terminal insertion port 62 (see FIG. 5A). Here, the terminal 20 is inserted into the terminal accommodating chamber 60 while the elastic protrusion 40 is elastically brought into contact with the opposed inner wall surface 60b.
More specifically, the terminal in a state in which the elastic protrusion 40 is elastically deformed so as to reduce the inclination angle from a neutral state in which the elastic protrusion 40 is not elastically deformed, that is, in a state in which the terminal 20 obtains a spring force by the elastic protrusion 40. It is inserted into the storage chamber 60.
Therefore, the terminal 20 is moved while the wall 22a in which the locking opening 25 is formed is brought into sliding contact with the inner wall surface 60a and the elastic protruding portion 40 is brought into sliding contact with the opposed inner wall surface 60b.

  Thereafter, the terminal 20 is further moved toward the back side of the terminal accommodating chamber 60 (see FIG. 5B). Here, the terminal 20 is brought into contact with the elastic locking piece 70, and the elastic locking piece 70 is bent and deformed into the flexible space 61 so as to approach the inner wall surface 60 a of the flexible space 61. Is secured. At this time, the elastic protrusion 40 is elastically in contact with the opposed inner wall surface 60b.

Thereafter, the terminal 20 is further moved toward the inner side of the terminal accommodating chamber 60 and is locked in the terminal accommodating chamber 60 by the elastic locking piece 70 (see FIG. 5C). Here, as shown in FIG. 4, the elastic locking piece 70 secures the engagement margin P with the locking surface 71 with respect to the locked surface 27 of the terminal 20 oriented in the direction opposite to the terminal insertion direction D. Thus, the terminal 20 is locked in the terminal accommodating chamber 60 by being elastically restored as described above.
At this time, the elastic protrusion 40 is elastically contacted with the opposed inner wall surface 60b, and the terminal 20 is pressed against the inner wall surface 60a by the elastic protruding portion 40, whereby the terminal 20 is opposed to the elastic wall 40b via the elastic protruding portion 40. Arranged so as not to leave a gap with the inner wall surface 60a while being in contact with the inner wall surface 60b. For this reason, rattling of the terminal 20 in the terminal accommodating chamber 60 is eliminated, and the engagement margin P between the locked surface 27 and the locking surface 71 is ensured reliably.

  In the connector 1 according to the embodiment of the present invention, the terminal 20 is pressed against the inner wall surface 60a by the elastic protrusion 40, whereby the terminal 20 is brought into contact with the opposing inner wall surface 60b via the elastic protrusion 40. Since it is arranged so as not to open a gap with respect to 60 a, rattling of the terminal 20 in the terminal accommodating chamber 60 is prevented, so that the engagement margin between the locked surface 27 and the locking surface 71 is ensured. As a result, the terminal 20 can be reliably locked in the terminal accommodating chamber 60.

  In the connector 1 according to the embodiment of the present invention, the elastic protrusion 40 is formed by cutting a part of the wall 22b forming the terminal 20, so that the elastic protrusion 40 can be provided with a simple configuration. As a result, there is no need to change the size of the connector housing 50.

(Modification)
Next, a modification of the connector 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 6 is a cross-sectional view of a modified connector 2.
The connector 2 of this modification is different from the connector of the embodiment in that the terminal 80 of the terminal-attached electric wire 100 has an elastic protrusion 90 instead of the elastic protrusion 40.
Other configurations are the same as those in the embodiment, and the same components as those in the embodiment are denoted by the same reference numerals.

The elastic protruding portion 90 is a portion protruding so as to be elastically contacted with the opposing inner wall surface 60b of the terminal accommodating chamber 60 facing the inner wall surface 60a of the terminal accommodating chamber 60 from which the elastic locking piece 70 is projected. .
The elastic protrusion 90 is formed by expanding a part of the wall forming the terminal 80. More specifically, the elastic protrusion 90 is a part of the wall 82b that faces the wall 82a in which the locking opening 25 is formed, among the walls that form four rectangular tube-shaped surfaces of the connection main body 83. Formed by bulging.

  Similar to the connector 1 of the embodiment, the connector 2 of this modification is configured such that the terminal 20 is pressed against the inner wall surface 60b via the elastic protrusion 90 when the terminal 20 is pressed against the inner wall surface 60a by the elastic protrusion 90. Since it is arranged so as not to open a gap with the inner wall surface 60 a while being in contact, the locked surface 27 and the locking surface 71 are prevented from rattling of the terminal 20 in the terminal accommodating chamber 60. As a result, the terminal 20 can be reliably locked in the terminal accommodating chamber 60.

  In addition, although the connectors 1 and 2 which concern on the Example of this invention illustrated what provided the two terminal accommodating chambers 60 and 60 in the connector housing 50, it is not restricted to this, The connector housing 50 has at least 1 terminal. The accommodation chamber 60 should just be provided.

  The invention made by the present inventor has been specifically described based on the above-described embodiments of the invention. However, the present invention is not limited to the above-described embodiments of the invention and does not depart from the gist thereof. Various changes can be made.

DESCRIPTION OF SYMBOLS 1, 2 Connector 10, 100 Electric wire with a terminal 11 Conductor part 12 Insulation coating | cover part 20, 80 Terminal 22, 82 Mating terminal connection part 22a, 22b, 82a, 82b Wall 23, 83 Connection main-body part 24 Elastic contact piece 25 For latching Opening portion 26 Locking piece guide portion 27 Locked surface 30 Wire connection portion 31 Conductor crimping portion 32 Insulation coating crimping portion 33 Intermediate portion 40, 90 Elastic protrusion portion 50 Connector housing 60 Terminal accommodating chamber 60a Inner wall surface 60b Opposed inner wall surface 61 Flexible space 62 Terminal insertion port 63 Mating terminal insertion port 70 Elastic locking piece 71 Locking surface W Electric wire

Claims (2)

An electric wire with a terminal provided with a terminal at a terminal portion of the electric wire and a terminal accommodating chamber for accommodating the terminal are formed, and the terminal is directed with a locking surface at a tip in an insertion direction of the terminal into the terminal accommodating chamber. A connector housing including an elastic locking piece protruding in a cantilever manner on the inner wall surface of the storage chamber, and the terminal is bent and deformed so that the elastic locking piece is brought closer to the inner wall surface The elastic locking piece is inserted into the storage chamber and elastically restored so as to secure an engagement margin between the locked surface of the terminal and the locking surface, which is directed in the direction opposite to the insertion direction of the terminal. In the connector in which the terminal is locked in the terminal accommodating chamber,
The terminal is
The locking surface can be arranged in a state in which the locked surface is formed as a part of the inner edge surface of the opening and the elastic locking piece is elastically restored from a deformed state to a neutral state where the elastic locking piece is not deformed. An opening,
A region facing the locking opening from one place on the wall facing the wall where the locking opening is formed so as to elastically contact the facing inner wall of the terminal accommodating chamber facing the inner wall at least part of which is projected as such, and to press the terminal so as not empty gap on the inner wall surface of the periphery of the elastic latching pieces between the inner wall surface of the periphery of the elastic latching pieces An elastic protrusion,
A connector comprising: The terminal is
A plate-shaped metal member is formed,
The elastic protrusion is
The connector according to claim 1, wherein the connector is formed by cutting and raising a part of a wall forming the terminal.

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